VDBH 217
(vdB-Hagen 217; BH 217; vdBergh-Hagen 217; MWSC 2553; ESO 333 02)
0.95
UTI
0.77
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
Stellar density (N50/rad)
48.7 [N/pc2]
- CN 0.77 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
Overview
VDBH 217 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999β | 259.075 | -40.817 | 0.321 | -0.7 | -1.843 | 14.346 |
| Almeida et al. | 2025 | 259.075 | -40.814 | β | β | β | β |
| Hunt & Reffert | 2024 | 259.073 | -40.818 | 0.326 | -0.712 | -1.848 | 48.033 |
| Cavallo et al. | 2024 | 259.07 | -40.817 | 0.326 | β | β | β |
| Hunt & Reffert | 2023 | 259.073 | -40.818 | 0.326 | -0.712 | -1.848 | 48.033 |
| Just et al. | 2023 | 259.07 | -40.81 | β | β | β | β |
| Richer et al. | 2021 | 259.074 | -40.821 | 0.326 | -0.676 | -1.805 | β |
| Dias et al. | 2021 | 259.075 | -40.814 | 0.314 | -0.684 | -1.807 | β |
| Cantat-Gaudin et al. | 2020 | 259.071 | -40.815 | 0.31 | -0.661 | -1.826 | β |
| SΓ‘nchez et al. | 2020 | 259.075 | -40.817 | β | -0.737 | -1.975 | β |
| Cantat-Gaudin & Anders | 2020 | 259.071 | -40.815 | 0.31 | -0.661 | -1.826 | β |
| Soubiran et al. | 2018 | 259.071 | -40.815 | β | β | β | -12.65 |
| Bica et al. | 2019 | 259.062 | -40.824 | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 259.071 | -40.815 | 0.31 | -0.661 | -1.826 | β |
| Kharchenko et al. | 2016 | 259.07 | -40.81 | β | β | β | β |
| Dias et al. | 2014 | 259.075 | -40.817 | β | -2.17 | -1.0 | β |
| Kharchenko et al. | 2013 | 259.08 | -40.81 | β | -0.13 | -3.66 | β |
| Bukowiecki et al. | 2011 | 259.067 | -40.817 | β | β | β | β |
| Dias et al. | 2002 | 259.075 | -40.817 | β | -2.17 | -1.0 | β |
π‘ Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999β | 2.655 | 3.675 | 2.42 | 48 | 0.240 | 1110 | β | β |
| Almeida et al. | 2025 | 2.13 | 3.35 | β | 13 | β | 986 | β | β |
| Hunt & Reffert | 2024 | β | β | β | β | β | 3054(1) | β | β |
| Cavallo et al. | 2024 | 2.64 | 4.30 | β | 83 | 0.410 | β | β | β |
| Hunt & Reffert | 2023 | 2.75 | 4.28 | 2.42 | 37 | β | β | β | β |
| Just et al. | 2023 | β | β | β | 50 | β | 110 | β | β |
| Richer et al. | 2021 | β | 1.76 | β | β | β | β | β | β |
| Dias et al. | 2021 | 2.13 | 3.35 | β | 13 | 0.240 | β | β | β |
| Cantat-Gaudin et al. | 2020 | 3.10 | 3.27 | β | 35 | β | β | β | β |
| Cantat-Gaudin & Anders | 2020 | 2.95 | β | β | β | β | β | β | β |
| Soubiran et al. | 2018 | 2.95 | β | β | β | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 2.95 | β | β | β | β | β | β | β |
| Kharchenko et al. | 2016 | 1.72 | 4.03 | β | 50 | β | β | β | β |
| Kharchenko et al. | 2013 | 1.72 | 4.03 | β | 50 | β | β | β | β |
| Bukowiecki et al. | 2012 | β | β | β | β | β | 1234 | β | β |
| Bukowiecki et al. | 2011 | 2.67(1) | 3.47 | β | 45 | β | β | β | β |
| Dias et al. | 2002 | 1.39 | 3.88 | β | 50 | -0.580 | β | β | β |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
MOCA


Cavallo et al. (2024)
Gold sample.
Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.